The Rio Nunez region : a small corner of West Africa's rice coast region -- The first-comers and the roots of coastal rice-growing technology -- The newcomers and the seeds of tidal rice-growing technology -- Coastal collaboration and specialization : flowering of tidal rice-growing technologies -- The strangers and the branches of coastal rice-growing technology -- Feeding the slave trade : the trade in rice and captives from West Africa's rice coast -- Conclusion -- Appendix 1 : fieldwork interviews -- Appendix 2 : rice terminology in Atlantic languages spoken in the coastal Rio Nunez region